Septic Services in All 50 States
Over 29 million American homes rely on septic systems. FindSeptic covers 198 cities across every US state with local contractors, soil conditions, regulations, and pricing data.
Southeast
12 states
Alabama
38% on septic · 8 cities · 700K systems
Arkansas
25% on septic · 3 cities · 350K systems
Florida
25% on septic · 19 cities · 2600K systems
Georgia
35% on septic · 11 cities · 1400K systems
Kentucky
40% on septic · 4 cities · 500K systems
Louisiana
20% on septic · 4 cities · 400K systems
Mississippi
35% on septic · 3 cities · 400K systems
North Carolina
48% on septic · 13 cities · 2100K systems
South Carolina
40% on septic · 9 cities · 900K systems
Tennessee
33% on septic · 8 cities · 850K systems
Virginia
25% on septic · 8 cities · 1000K systems
West Virginia
35% on septic · 3 cities · 250K systems
Northeast
11 states
Connecticut
28% on septic · 2 cities · 300K systems
Delaware
25% on septic · 2 cities · 100K systems
Maine
50% on septic · 2 cities · 350K systems
Maryland
20% on septic · 2 cities · 450K systems
Massachusetts
20% on septic · 2 cities · 500K systems
New Hampshire
50% on septic · 2 cities · 250K systems
New Jersey
15% on septic · 2 cities · 500K systems
New York
15% on septic · 4 cities · 1500K systems
Pennsylvania
20% on septic · 4 cities · 1500K systems
Rhode Island
20% on septic · 2 cities · 80K systems
Vermont
55% on septic · 2 cities · 180K systems
Midwest
12 states
Illinois
15% on septic · 2 cities · 800K systems
Indiana
30% on septic · 4 cities · 500K systems
Iowa
25% on septic · 2 cities · 300K systems
Kansas
20% on septic · 2 cities · 250K systems
Michigan
30% on septic · 6 cities · 1300K systems
Minnesota
25% on septic · 3 cities · 550K systems
Missouri
25% on septic · 3 cities · 600K systems
Nebraska
20% on septic · 2 cities · 200K systems
North Dakota
25% on septic · 2 cities · 80K systems
Ohio
20% on septic · 7 cities · 750K systems
South Dakota
30% on septic · 2 cities · 120K systems
Wisconsin
25% on septic · 2 cities · 750K systems
West
11 states
Alaska
20% on septic · 2 cities · 50K systems
California
10% on septic · 4 cities · 1200K systems
Colorado
15% on septic · 2 cities · 350K systems
Hawaii
10% on septic · 2 cities · 110K systems
Idaho
25% on septic · 2 cities · 200K systems
Montana
30% on septic · 2 cities · 150K systems
Nevada
10% on septic · 2 cities · 100K systems
Oregon
20% on septic · 2 cities · 400K systems
Utah
15% on septic · 2 cities · 150K systems
Washington
20% on septic · 2 cities · 500K systems
Wyoming
25% on septic · 2 cities · 60K systems
Southwest
4 states
Septic Systems Across America: Key Facts
Approximately one in five American homes uses a septic system rather than municipal sewer. Septic usage is highest in rural and suburban areas, particularly in the Southeast where states like North Carolina (48%), South Carolina (44%), and Georgia (36%) have the highest septic density. Vermont leads the nation at over 50% of homes on septic.
Regulations vary significantly by state. Some states like New Jersey enforce strict statewide standards through their Department of Environmental Protection, while others like Georgia delegate most authority to county health departments, creating significant variation within the state. Virginia recently enacted mandatory septic inspections at property transfer in many counties.
Installation costs range from $5,000 for a conventional system in areas with favorable soil to over $30,000 for advanced treatment systems required in challenging soil conditions or environmentally sensitive areas. The biggest cost driver is soil type — clay soils, high water tables, and shallow bedrock all require alternative system designs that cost 2-3x more than conventional gravity systems.
Every state requires some form of soil evaluation or percolation test before issuing a septic permit. The specific requirements, fees, and timelines vary — from simple perc tests costing $250 in some rural counties to full soil evaluations by licensed soil scientists costing $1,200 in states like North Carolina.